BARUCH TRAGEDY: Meng (left, with sister, Rep. Grace may face charges over the death of Chun “Michael” Deng (right).

The brother of Rep. Grace Meng could face a homicide charge in the hazing death of a Baruch College fraternity pledge, according to a Pennsylvania law-enforcement official close to the investigation.

Andy Meng — the younger brother of the Flushing Democrat and the president of the Pi Delta Psi national fraternity — could be charged with manslaughter or murder if he helped delay medical treatment for Baruch pledge Chun “Michael” Deng, the source said.

“He is a person of interest,” the source told The Post. “If by deliberate delay someone’s ability to seek medical help was compromised, then that could be a form of homicide.”

Deng, 19, died Dec. 8 from head injuries after fraternity brothers blindfolded and tackled him in the freezing cold. He was not taken to the hospital until more than 90 minutes after he was knocked unconscious, and fraternity members changed his clothes after pummeling him.

Pocono Mountain Regional Police and the Monroe County district attorney are examining phone records that show Meng, who was not at the house at the time, was in contact with the Baruch frat boys “immediately after” the hazing, the source said.

About 30 people affiliated with Pi Delta Psi — including Deng — were staying at the Poconos house that served as a retreat for the fraternity when the incident took place.

Authorities are still trying to determine which of 30 people there were involved in the actual hazing.

Meng, 28, of Bayside, is also being probed for whether or not he ordered the destruction of evidence after the incident. He’s suspected of instructing Pi Delta Psi brothers to get rid of anything with the frat’s insignia on it before police arrived, the source noted.

Meng is a national rep for Pi Delta Psi, a Flushing-based Asian-American fraternity founded in 1994. After Deng’s death, he announced that his umbrella group would revoke the Baruch frat’s chapter.

“Baruch Colony has violated the values and rules of our organization, including our strict no-hazing policy,” he said in a Dec. 16 statement. “As such, they shall no longer be recognized as having any association with Pi Delta Psi.”

But law-enforcement officials wondered if the public comments were a possible smoke screen.

“Which one is the real man? The one who was talking on the phone that night? Or the one who was making statements after the fact,” the law-enforcement source said.

Baruch announced in December that it’s banning the fraternity permanently.

Neither Andy nor Grace Meng returned calls seeking comment.

Their father, disgraced ex-Assemblyman Jimmy Meng, was sentenced to a month in jail in March 2013 for his role in a bribery scheme.